MahjongTime News

Important Scoring Changes - for WSoM and Japanese Rules

Changes to WSOM and Riichi Competition Scoring!

We have introduced some changes in our rules section for the progress for both WSoM and Riichi!
For WSoM, the rules are outlined below.For example, previously a "Three Concealed Triplets" was scored as a 25 by Mahjong Time but now it is scored as a 30 under WSoM rules. Our development team is working hard to implement these important rule changes and we will send out an alert once they are completed! Here is a list of the specific rules and scoring changes that will be adopted:

There is a 5-point minimum limit for going out.

Concealed hand is re-defined and does not apply (add)
to irregular hands (7 pairs and 13 Terminals).

Small Three Winds (MT = 25, WSoM = 30)

All Triplets (MT = 40, WSoM = 30)

Three Concealed Triplets (MT = 25, WSoM = 30)

Four Concealed Triplets (MT = 115, WSoM = 125)

Small Three Similar Triplets (MT = 25, WSoM = 30)

Win on Kong (MT = 15, WSoM = 10)

Robbing a Kong (MT = 15, WSoM = 10)

Blessing of Heaven (MT = 320, WSoM = 155)

Blessing of Earth (MT = 320, WSoM = 155)

Thirteen Terminals (MT = 320, WSoM = 160)

Seven Pairs (MT = 25, WSoM = 30)

For Riichi rules, we are following the lead of our partner organization, the European Mahjong Association (EMA). They have submitted some great rules and scoring changes.

You can Click here for the knowing current Riichi rules as listed by the EMA. Please review our table below for information on the new Riichi rules changes that we will be implementing:

EMA Rules

Riichi Mahjong (future release)

JM(on live)

1.Points System

fan=yaku+red_fives+
dora+kan_dora+ura_dora
minipoints

hans=yaku+
red_fives+dora+
kan_dora+ura_dora
fus

hans+dora+
ura_dora+kan_dora fus

2.Minimum points for Mahjong

1 yaku

1 hans

1 hans

3.Red Fives

yes

yes

no

4.Minipoints calculation

if fan<5

if hans <5

always

5.Riichi Payment

1000 points

1000 points

0 points

6.Bonus markers for tied games or when East remains East.

yes

yes

no

7.All Simples

only concealed

only concealed

concealed/open sets

8.Pinfu

only concealed

only concealed

concealed/open sets

9.Bottom of the Sea

last tile, or the following discard

last tile, or the following discard

last tile

10.Little Three Dragons

2 yaku

2 hans

4 hans

11.Nagashi Mangan

yes

yes

no

12.Nine Gates

only concealed

only concealed

concealed/open sets

13.Blessing of Man

yes

yes

no

14.Little FourWinds

yes

yes

no

15.Big FourWinds

yes

yes

no

16.Four Winds

no

no

yes

17.Open Pinfu

yes

yes

no

18.Seven pairs (no further minipoints)

yes

yes

no

19.Uma bonus/penalty

yes

yes

no

20.No change Seat

if East winner, or Tenpai

if East winner, or Tenpai

if East winner or dead wall

21.Concealed Kong

two middle tiles face-down

two middle tiles face-down

two middle tiles face- up

22.Out From Start

no

no

yes

23.Blessing of Heaven

yes

yes

no

24.Blessing of Earth

yes

yes

no

25.Ready

A player is not allowed to declare riichi if there are less than four tiles left in the wall.